While the Knicks & Rangers will remain with ESPN New York, albeit on the 1050AM frequency next season, the Jets will move with 98.7 FM being ditched to iHeart's classic rock station Q104.3. (Possible Paywall being it's an article from The Athletic)
theathletic.com
Jets to broadcast games on 104.3 FM radio station
The New York Knicks and New York Rangers are remaining with ESPN New York, even without the FM station.